Ethyl 2-(2-amino-6-oxo-1H-purin-7(6H)-yl)propanoate

7-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanoyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

7-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-ynoyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

rac-7-[(2R,3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

7-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopropyl]acetyl}-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

7-[2-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-7-azabicyclo[2.2.1]heptane-1-carboxylic acid

2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanamido]methyl}-1,3-thiazole-5-carboxylic acid

2-{[(2S,3S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylpentanamido]methyl}-1,3-thiazole-5-carboxylic acid

rac-(1R,6S)-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopent-1-ene-1-carbonyl]-3-azabicyclo[4.1.0]heptane-7-carboxylic acid

rac-(1R,6S)-3-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanoyl]-3-azabicyclo[4.1.0]heptane-7-carboxylic acid

rac-(1R,6S)-3-[3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoyl]-3-azabicyclo[4.1.0]heptane-7-carboxylic acid